kernel/arch/x86/kernel/paravirt-spinlocks.c

   1 /*
   2  * Split spinlock implementation out into its own file, so it can be
   3  * compiled in a FTRACE-compatible way.
   4  */
   5 #include <linux/spinlock.h>
   6 #include <linux/module.h>
   7 #include <linux/jump_label.h>
   8
   9 #include <asm/paravirt.h>
  10
  11 struct pv_lock_ops pv_lock_ops = {
  12 #ifdef CONFIG_SMP
  13         .lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop),
  14         .unlock_kick = paravirt_nop,
  15 #endif
  16 };
  17 EXPORT_SYMBOL(pv_lock_ops);
  18
  19 struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE;
  20 EXPORT_SYMBOL(paravirt_ticketlocks_enabled);